function myPagination(options) {
  var pageSize = options.pageSize,
    pageTotal = options.pageTotal,
    curPage = options.curPage,
    id = options.id,
    getPage = options.getPage,
    showPageTotalFlag = options.showPageTotalFlag,
    showSkipInputFlag = options.showSkipInputFlag,
    pageAmount = options.pageAmount,
    dataTotal = options.dataTotal;
  this.pageSize = pageSize || 5; //分页个数
  this.pageTotal = pageTotal; //总共多少页
  this.pageAmount = pageAmount; //每页多少条
  this.dataTotal = dataTotal; //总共多少数据
  this.curPage = curPage || 1; //初始页码
  this.ul = document.createElement('ul');
  this.id = id;
  this.getPage = getPage;
  this.middlePageSize = (this.pageSize - 1) / 2;
  this.showPageTotalFlag = showPageTotalFlag || false; //是否显示数据统计
  this.showSkipInputFlag = showSkipInputFlag || false; //是否支持跳转
  this.init();
};

myPagination.prototype = {
  init: function init() {
    var pagination = document.getElementById(this.id);
    pagination.innerHTML = '';
    this.ul.innerHTML = '';
    pagination.appendChild(this.ul);
    var that = this;
    //首页
    that.firstPage();
    //上一页
    that.lastPage();
    //分页
    that.getPages().forEach(function (item) {
      var li = document.createElement('li');
      if (item == that.curPage) {
        li.className = 'active';
      } else {
        li.onclick = function () {
          that.curPage = parseInt(this.innerHTML);
          that.init();
          that.getPage(that.curPage);
        };
      }
      li.innerHTML = item;
      that.ul.appendChild(li);
    });
    //下一页
    that.nextPage();
    //尾页
    that.finalPage();

    //是否支持跳转
    if (that.showSkipInputFlag)
      that.showSkipInput();
    //是否显示总页数,每页个数,数据
    if (that.showPageTotalFlag)
      that.showPageTotal();
  },
  //首页
  firstPage: function firstPage() {
    var that = this;
    var li = document.createElement('li');
    li.innerHTML = '首页';
    this.ul.appendChild(li);
    if (parseInt(that.curPage) > 1) {
      li.onclick = function () {
        var val = parseInt(1);
        that.curPage = val;
        that.getPage(that.curPage);
        that.init();
      };
    } else {
      li.className = 'disabled';
    }
  },
  //上一页
  lastPage: function lastPage() {
    var that = this;
    var li = document.createElement('li');
    li.innerHTML = '<';
    if (parseInt(that.curPage) > 1) {
      li.onclick = function () {
        that.curPage = parseInt(that.curPage) - 1;
        that.init();
        that.getPage(that.curPage);
      };
    } else {
      li.className = 'disabled';
    }
    this.ul.appendChild(li);
  },
  //分页
  getPages: function getPages() {
    var pag = [];
    if (this.curPage <= this.pageTotal) {

      if (this.curPage < this.pageSize - this.middlePageSize) {
        //当前页数小于显示条数
        var i = Math.min(this.pageSize, this.pageTotal);
        while (i) {
          pag.unshift(i--);
        }
      } else {
        //当前页数大于显示条数
        var middle = this.curPage - Math.floor(this.pageSize / 2),
          //从哪里开始
          i = this.pageSize;
        if (middle > this.pageTotal - this.pageSize) {
          if (middle <= Math.ceil(this.pageSize / 2) - 1) {
            i = this.pageSize + this.pageTotal - this.pageSize;
            middle = 1;
          } else {
            middle = this.pageTotal - this.pageSize + 1;
          }
        }
        while (i--) {
          pag.push(middle++);
        }
      }
    } else {
      console.error('当前页数不能大于总页数');
    }
    if (!this.pageSize) {
      console.error('显示页数不能为空或者0');
    }
    return pag;
  },
  //下一页
  nextPage: function nextPage() {
    var that = this;
    var li = document.createElement('li');
    li.innerHTML = '>';
    if (parseInt(that.curPage) < parseInt(that.pageTotal)) {
      li.onclick = function () {
        that.curPage = parseInt(that.curPage) + 1;
        that.init();
        that.getPage(that.curPage);
      };
    } else {
      li.className = 'disabled';
    }
    this.ul.appendChild(li);
  },
  //尾页
  finalPage: function finalPage() {
    var that = this;
    var li = document.createElement('li');
    li.innerHTML = '尾页';
    this.ul.appendChild(li);
    if (parseInt(that.curPage) < parseInt(that.pageTotal)) {
      li.onclick = function () {
        var yyfinalPage = that.pageTotal;
        var val = parseInt(yyfinalPage);
        that.curPage = val;
        that.getPage(that.curPage);
        that.init();
      };
    } else {
      li.className = 'disabled';
    }

  },
  //是否支持跳转
  showSkipInput: function showSkipInput() {
    var that = this;
    var li = document.createElement('li');
    li.className = 'totalPage';
    var span1 = document.createElement('span');
    span1.innerHTML = ' 跳转到';
    li.appendChild(span1);
    var input = document.createElement('input');
    input.setAttribute("type", "number");
    input.onkeydown = function (e) {
      var oEvent = e || event;
      if (oEvent.keyCode == '13') {
        var val = parseInt(oEvent.target.value);
        if (typeof val === 'number' && val <= that.pageTotal) {
          that.curPage = val;
          that.getPage(that.curPage);
        } else {
          alert("跳转页数不能大于总页数 !")
        }
        that.init();
      }
    };
    li.appendChild(input);
    var span2 = document.createElement('span');
    span2.innerHTML = '页';
    li.appendChild(span2);
    this.ul.appendChild(li);
  },
  //是否显示总页数,每页个数,数据
  showPageTotal: function showPageTotal() {
    var that = this;
    var li = document.createElement('li');
    li.innerHTML = '共&nbsp' + that.pageTotal + '&nbsp页';
    li.className = 'totalPage';
    this.ul.appendChild(li);
    var li2 = document.createElement('li');
    li2.innerHTML = '每页最多&nbsp' + that.pageAmount + '&nbsp条';
    li2.className = 'totalPage';
    this.ul.appendChild(li2);
    var li3 = document.createElement('li');
    li3.innerHTML = '合计&nbsp' + that.dataTotal + '&nbsp条数据';
    li3.className = 'totalPage';
    this.ul.appendChild(li3);
  }
};